# Retinal vs Sensitivity Specificity

The clearest difference is device support: Sensitivity Specificity at 3 against Retinal's 1. Sensitivity Specificity also leads on iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Retinal | Sensitivity Specificity |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 1 MB | 41 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nico Rohrbach](https://appshunter.io/developer/662717596) | [STAGE CODING, Travnik](https://appshunter.io/developer/1637068135) |

## What reviewers say

### Retinal

[App page](https://appshunter.io/ios/app/retinal/id1564557619)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sensitivity Specificity

[App page](https://appshunter.io/ios/app/sensitivity-specificity/id1618659652)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Retinal free?

Retinal is free to download, with no in-app purchases.

### Is Sensitivity Specificity free?

Sensitivity Specificity is free to download, with no in-app purchases.

### Do Retinal or Sensitivity Specificity have ads?

Neither Retinal nor Sensitivity Specificity shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*